be careful! portrait of strict teacher, bossy man with beard wearing sweatshirt standing with admonishing gesture

accuse admonishing adult advice alert anger angry annoyed attention background ban beard boss bossy careful caucasian caution couching danger disapproval displeased dispraise emotion expression finger frowning gesture gray hand hey indoor isolated lesson looking male man people pointing portrait scolding serious showing sign strict sweatshirt teach teacher threaten warn warning you young